cid#1371252: Add move semantics

Change-Id: I7cf1b4c92fdddbef681654c780a9ee466c33ce0b

include/typelib/typedescription.hxx

@@ -82,6 +82,10 @@ public:
         @param rDescr another TypeDescription
     */
     inline TypeDescription( const TypeDescription & rDescr );
+#if defined LIBO_INTERNAL_ONLY
+    TypeDescription(TypeDescription && other): _pTypeDescr(other._pTypeDescr)
+    { other._pTypeDescr = nullptr; }
+#endif
     /** Constructor:
 
         @param pTypeName a type name
@@ -110,6 +114,17 @@ public:
     inline TypeDescription & SAL_CALL operator =( const TypeDescription & rTypeDescr )
         { return this->operator =( rTypeDescr.get() ); }
 
+#if defined LIBO_INTERNAL_ONLY
+    TypeDescription & operator =(TypeDescription && other) {
+        if (_pTypeDescr != nullptr) {
+            typelib_typedescription_release(_pTypeDescr);
+        }
+        _pTypeDescr = other._pTypeDescr;
+        other._pTypeDescr = nullptr;
+        return *this;
+    }
+#endif
+
     /** Tests whether two type descriptions are equal.
 
         @param pTypeDescr another type description